1. Manuals
  2. Brands
  3. Samsung Manuals
  4. Cell Phone
  5. STH-N271
  6. Service manual

Samsung STH-N271 Service Manual

Single band mobile cellular phone
Hide thumbs
Table of Contents

Advertisement

Quick Links

Download this manual
SERVICE
SINGLE BAND Mobile Cellular Phone
SINGLE BAND Mobile
Cellular Phone
STH-N271
Manual
CONTENTS
8. Exploded Views and Parts List
Circuit Diagrams

Advertisement

Table of Contents
loading

Related Manuals for Samsung STH-N271

Summary of Contents for Samsung STH-N271

  • Page 1: Table Of Contents

    SINGLE BAND Mobile Cellular Phone STH-N271 SERVICE Manual SINGLE BAND Mobile Cellular Phone CONTENTS 1. Specification 2. Trouble Shooting 3. Test Procedure 4. Function of All Active Devices 5. Frequency Synthesizer Circuit and Spurious Radiation Suppression Circuit 6. Easy NAM Programming 7.
  • Page 2 ELECTRONICS ©Samsung Electronics Co.,Ltd. August. 2001 Pinted in Korea. Code No.: GH68-02202A BASIC.
  • Page 3 1. STH-N271 SPECIFICATION (REF TIA/EIA/IS-137-A-1) 1. Confirmation of Power level (Class IV) Level Analog(dBm) Digital(dBm) 0,1,2 26.5 26.5 2. Channel Numbering and Frequency System Channel Number Transmitter Receiver (Not used) 990 CH 824.01 MHz 869.01 MHz A” 991 CH ~ 1023 CH 824.04 ~ 825.00 MHz...

  • Page 4: Specification

    45 ~ 55 hr 190 ~ 300 hr Talk time Including 900 mAh battery 60 ~ 90 min 2 ~ 3 hr Including 1200 mAh battery 80 ~ 120 min 2.5 ~ 4.5 hr SAMSUNG Proprietary-Contents may change without notice...
  • Page 5 32K_XIN=32.768 kHZ Need to check neighbor part Need to check OSC320, Y201 & neighbor part VCC, ADD(0:21), DATA(0:15), FLASH_CS, SRAM_CS, UBE, Memory (U202) MEMOEB, MEMWEB control signal OK? Need to replace Memory(U202) Program Running SAMSUNG Proprietary-Contents may change without notice...

  • Page 6: Trouble Shooting

    R216, U205, D202 Vibrator Run Need to check CN202 LCD EL Vibrator OK Send Command Main Audio Receiver Path ON (Test mode:031, 131, 134, 185) REC20+,- Signal Need to check SPK101 & neighbor part Good SAMSUNG Proprietary-Contents may change without notice...

  • Page 7: Key Display Good

    Need to check MIC101 & neighbor part Key Display Good Mic Path Good Send Command ALT_LED_ON Send Command SVC_LED_ON Send Command LED_ON (Test mode:178) LED Operation Need to check D210, D211, Q204, Q206 GOOD SAMSUNG Proprietary-Contents may change without notice...

  • Page 8: Good

    STH-N271 Trouble Shooting 1-4. Abnormal Buzzer Operation START Send Command Ringer Path ON (Test mode:183) Ringer Signal Need to check U204, D201, CN202 Buzzer Sound Output Replace CN202 Buzzer Operation Good SAMSUNG Proprietary-Contents may change without notice...
  • Page 9 Command AMP_EN enable Audio set Path=HS (Test mode:187) HEADSET_SENSE=H Need to check Q101, CN101 & neighbor parts Press Button on the Ear-Jack SEND_END=H Need to check Q102, CN101 & neighbor parts Ear_Mic phone Operation Good SAMSUNG Proprietary-Contents may change without notice...
  • Page 10 2. RF Section 2-1. Call processing and Online Test START Normal SVC? Check RX path Set up Call OK? Check TX path Measure SINAD/BER Good? Check RX path Measure Tx Power Good? Check TX path DONE SAMSUNG Proprietary-Contents may change without notice...

  • Page 11: Need To Check Dome

    Need to check F305 U301_8=-53dBm Need to check F306 V_LNA_CELL=H F304 input=-33dBm U107_1=H U105_1=H Need to check U105, U106, U107 Need to check U301 & neighbor parts U304_45=-33dBm Need to check F304 & neighbor parts SAMSUNG Proprietary-Contents may change without notice...
  • Page 12 U105 & neighbor parts Replace U304 U304_34 Lev=-33dBm Freq=130.05MHz Replace F302 Need to check U304_37 Lev=-1dBm U304, L303, C308, L301, C307 Freq=450kHz Replace F301 or U304_25 Lev=-7dBm Need to check R302, R304, C301 Freq=450kHz MODE TDMA AMPS SAMSUNG Proprietary-Contents may change without notice...
  • Page 13 Need to check U304 & R327, R323, C353, C107 U101_40 BBCLK= 6.2208MHz or 4.96NHz or 5.12MHz Replace U203 U101_32RX_CLK= BBCLK/2 or BBCLK/8 Replace U203 U101_31 RX_SYNC= BBCLK/32 or BBCLK/128 Replace U203 U101_31 RX_DATA= serial data Replace U203 DONE SAMSUNG Proprietary-Contents may change without notice...
  • Page 14 IF_ON=H, PON_TX=H PON_VRF3=H U101_40 BBCLK= 6.2208MHz or 4.096MHz or5.12MHz Replace U203 U101_34 TX_CLK= BBCLK/32 or BBCLK/8 Replace U203 U101_33 TX_SYNC= BBCLK/512 or BBCLK/128 Replace U203 U101_33 TX_DATA= serial data Replace U203 TDMA AMPS MODE SAMSUNG Proprietary-Contents may change without notice 2-10...
  • Page 15 V_RF2=3.0V or Fc=Local_freq + 175.05 Replace U304 U304_59(RF OUT) Need to check measure Level U304_66 or Send command PA_CNT Replace U304 (Test mode:132) Level is adjustable? U304_59(RF OUT) Replace F310 Fc=Local_freq + 175.05 SAMSUNG Proprietary-Contents may change without notice 2-11...

  • Page 16: Neighbor Part

    VBATT(U305_14,15,16)=3.2~1V around 30dB or Replace U305 Need to check F306_1 around same power F313 & neighbor parts with U305 output Need to check F306 insertion loss F313 & neighbor parts under 3dB DONE SAMSUNG Proprietary-Contents may change without notice 2-12...
  • Page 17 3. STH-N271 TEST PROCEDURE 1. List of Equipment • 8920B TDMA M/S TEST SET (HP CARD, modified by Samsung ) • SIGNAL GENERATOR (2 SETS) • SPECTRUM ANALZER • DEVICE UNDER TEST (STH-N271) • TEST INTERFACE ADAPTER • COMBINNER •...

  • Page 18: Test Procedure

    Signal GEN1 GEN2 combinner RF cable serial port 8920B TDMA M/S TEST SET HP CARD A-OUT A-IN RF IN/OUT 4 pin cable A-OUT A-IN Data cable TEST I/F ADAPTER + 3.8 V DC P/S SAMSUNG Proprietary-Contents may change without notice...
  • Page 19 STH-N271 Test Procedure 2-2. Test Configration-2 Spectrum Analyzer RF cable coupler 8920B TDMA M/S TEST SET HP CARD RF IN/OUT A-OUT A-IN A-OUT A-IN Data cable TEST I/F ADAPTER + 3.8 V DC P/S SAMSUNG Proprietary-Contents may change without notice...
  • Page 20 STH-N271 Test Procedure 2-3. Test Configration-3 (Hands Free Kit) DC Power Hands Free Supply Kit BOX +13.7 V Ignition Cable Cradle Power cable Data cable Hands Free Mic Hands Free Speaker SAMSUNG Proprietary-Contents may change without notice...
  • Page 21 Connect to TEST equipment INTERFACE CONNECTOR Hook up to DUT Button connector (Table 4) DATA CABLE & PST CABLE Normal data cable, PC Link DSUB 25PIN CONNECTOR Connect to TEST I/F ADAPTOR (Table 5) SAMSUNG Proprietary-Contents may change without notice...
  • Page 22 External power on ( Test I/F Adapter / HFK) UART1 signal UART1 signal Battery interface signal UART1 signal BATT BATT UART1 signal UART1 signal Battery interface & Strobe (serial interface) Battery interface signal BATT Battery + Voltage SAMSUNG Proprietary-Contents may change without notice...
  • Page 23 External power ( Test I/F Adapter / HFK) TX_AUDIO HFK audio transmitter signal RX_AUDIO HFK audio receiver signal SIN2 UART2 OUT signal SOUT2 UART2 IN signal DP_RX_DATA UART1 RX data DP_TX_DATA UART1 TX data BOOT BOOT & Data IN (serial interface) SAMSUNG Proprietary-Contents may change without notice...
  • Page 24 STH-N271 Test Procedure 3. Auto test procedure (with HP CARD, modified by Samsung) a). Set up all test equipment like as Test configuration-1 b). Insert HP Card on the HP8920B Test Set c). Power ON phone d). Run AUTO Test e).

  • Page 25: A). Set Up All Test Equipment Like As Test

    "1 3 1" : Set_atten '3 8 3' channel. “1 7 3”:Compoff “0 3 2:”:HFK_on “1 3 4”:RXUNMUTE e). Measure Power of Intermodulation channel (2-Signal Generator) to meet 12dB SINAD based on standard 2.3.1.3.2 SAMSUNG Proprietary-Contents may change without notice...
  • Page 26 “1 7 2”:Compon “0 3 2:”:HFK_on “1 3 6”:TXUNMUTE e). Measure FM deviation and Set Reference level f). Send command TXMUTE (1 3 5) g). Measure relative FM deviation based on standard 3.3.1.2.4.3 SAMSUNG Proprietary-Contents may change without notice 3-10...
  • Page 27 Set up all test equipment like as Test configuration-2 Setup channel: 383ch RF amplitude: -50dBm Power Level: 0 b). Power ON phone and Make a call c). Measure the Spurious based on standard 3.4.2.2.3 SAMSUNG Proprietary-Contents may change without notice 3-11...

  • Page 28: Test Mode

    Get/Set TX_Q_DGCR IS-137 INIT Analog or Digital IS-137 CARRIER-ON Analog Only IS-137 CARRIER-OFF Analog or Digital IS-137 LOAD-SYNTH Channel Setting IS-137 SET-ATTN Set Power Level IS-137 RXMUTE IS-137 RXUNMUTE IS-137 TXMUTE IS-137 TXUNMUTE SAMSUNG Proprietary-Contents may change without notice 3-12...
  • Page 29 IS-137 COMPON IS-137 COMPOFF Backlight On Backlight Off Service/Alert LED On Service/Alert LED Off Vibrator On Vibrator Off LCD contrast Buzzer On Buzzer Off Speaker On Speaker Off MIC On MIC Off ReadTemp GetProductNumber SAMSUNG Proprietary-Contents may change without notice 3-13...

  • Page 30: Function Of All Active Devices

    4. STH-N271 Function of All Active Devices Reference Vendor Code Description U203 D5205 Baseband Engine Chip: IS-137 TDMA /AMPS solution U101 D5204-22 Interface Chip U304 uPC8015 RF one chip module: RF/IF Synthesizer, 2-Mixers, AGC, Q-DEMOD,UP converter U305 RF2162 Power Amplifier: Cellular band linear amplifier...
  • Page 31 5. STH-N271 Frequency Synthesizer Circuit and Spurious Radiation Suppression Circuit 1. Frequency Synthesizer Circuit The PLL (Phase Lock Loop) block consists of VC-TCXO (OSC302), PLL (belong to RF chip, U304), RF VCO (OSC301), IF VCO (OSC303), and loop filter. The VC_TCXO is a reference source of the frequency synthesizer. It provides 14.4MHz-reference frequency to PLL part.

  • Page 32: Frequency Synthesizer Circuit And Spurious Radiation Suppression Circuit

    43 dB Min at 869 ~ 894 MHz 56 dB Min at 824 ~ 849 MHz Input Power 3 W Max 1 W Max In/Out Impedance 50 Ohms 50 Ohms Mechanical Size 15.65 (L) X 9.2 (W) X 3.3 (H) mm SAMSUNG Proprietary-Contents may change without notice...
  • Page 33 6. STH-N271 E E a a s s y y N N A A M M P P r r o o g g r r a a m m m m i i n n g g [Function outline] Inputting #SID#*(SID: System Identity.
  • Page 34 10 digits except *, # and Pause is inputted for editing Phone Number. Other than that, Reinput Display is displayed with the original number, then the Screen moves to Edit Require Screen. In case of normal input, the input number is displayed following the display of Change. SAMSUNG Proprietary-Contents may change without notice...

  • Page 35: Easy Nam Programming

    [Note#3] During editing Phone#, it is not possible to enter “*”, “#” and “P(Pause)”. [Note#4] If the seting value for SID is not in the valid range (from 0 to 32767), the normal origination procedure will be executed when hitting SEND Key. SAMSUNG Proprietary-Contents may change without notice...
  • Page 36 [Note#3] During editing Phone#, it is not possible to enter “*”, “#” and “P(Pause)”. [Note#4] If the seting value for SID is not in the valid range (from 0 to 32767), the normal origination procedure will be executed when hitting SEND Key. SAMSUNG Proprietary-Contents may change without notice...

  • Page 37: Electrical Parts List

    7. STH-N271 MAIN Electrical Parts List Level SEC CODE Design LOC DESCRIPTIONS STH-N271D/COM 4201-000151 AN301 ANTENNA-WHIP 824-894MHz, -, 1.8, -, 4302-001081 BATT. BATTERY-LI(2ND) -, .25MAH, COIN, 0.03MA, -, - 4302-001081 BT201 BATTERY-LI(2ND) -, .25MAH, COIN, 0.03MA, -, - 2203-005061 C101...
  • Page 38 C-CERAMIC, CHIP 470pF, 10 %, 50 V, X7R, TP, 1005, - 2203-000438 C183 C-CERAMIC, CHIP 1 nF, 10 %, 50 V, X7R, TP, 1005, - 2203-000233 C184 C-CERAMIC, CHIP 0.1 nF, 5 %, 50 V, NP0, TP, 1005 SAMSUNG Proprietary-Contents may change without notice...
  • Page 39 C-CERAMIC, CHIP 0.003 nF, 0.25pF, 50 V, NP0, TP, 1005 2203-000254 C313 C-CERAMIC, CHIP 10 nF, 10 %, 16 V, X7R, TP, 1005, - 2203-000278 C314 C-CERAMIC, CHIP 0.01 nF, 0.5pF, 50 V, NP0, TP, 1005 SAMSUNG Proprietary-Contents may change without notice...
  • Page 40 C-CERAMIC, CHIP 100 nF, +80-20 %, 16 V, Y5 V, TP, 1005 2203-000386 C358 C-CERAMIC, CHIP 0.015 nF, 5 %, 50 V, NP0, TP, 1005 2203-005061 C359 C-CERAMIC, CHIP 100 nF, +80-20 %, 16 V, Y5 V, TP, 1005 SAMSUNG Proprietary-Contents may change without notice...
  • Page 41 C-CERAMIC, CHIP 100 nF, +80-20 %, 16 V, Y5 V, TP, 1005 2203-000696 C406 C-CERAMIC, CHIP 0.002 nF, 0.25pF, 50 V, NP0, TP, 1005 2203-005057 C407 C-CERAMIC, CHIP 0.0082 nF, 0.25pF, 50 V, NP0, TP, 1005 SAMSUNG Proprietary-Contents may change without notice...
  • Page 42 C-CERAMIC, CHIP 1000 nF, +80-20 %, 10 V, Y5 V, TP, 1608 2203-000438 C469 C-CERAMIC, CHIP 1 nF, 10 %, 50 V, X7R, TP, 1005, - 2203-005061 C473 C-CERAMIC, CHIP 100 nF, +80-20 %, 16 V, Y5 V, TP, 1005 SAMSUNG Proprietary-Contents may change without notice...
  • Page 43 R-CHIP 51 ohm, 5 %, 1/16 W, DA, TP, 1005 2703-001751 L308 INDUCTOR-SMD 3.9nH, 0.3nH, 1.0x0.5x0.5mm 2703-002036 L310 INDUCTOR-SMD 330 uH, 5 %, 3.2x2.5x2mm 2703-001733 L311 INDUCTOR-SMD 8.2nH, 5 %, 1x0.5x0.5mm 2703-001747 L312 INDUCTOR-SMD 4.7nH, 0.3nH, 1.0x0.5x0.5mm SAMSUNG Proprietary-Contents may change without notice...
  • Page 44 R-CHIP 1.8 kohm, 5 %, 1/16 W, DA, TP, 1005 2007-000141 R103 R-CHIP 2.2 kohm, 5 %, 1/16 W, DA, TP, 1005 2007-000151 R104 R-CHIP 15 kohm, 5 %, 1/16 W, DA, TP, 1005 SAMSUNG Proprietary-Contents may change without notice...
  • Page 45 R-CHIP 10 ohm, 5 %, 1/16 W, DA, TP, 1005 2007-000146 R143 R-CHIP 6.8 kohm, 5 %, 1/16 W, DA, TP, 1005 2007-000162 R144 R-CHIP 100 kohm, 5 %, 1/16 W, DA, TP, 1005 SAMSUNG Proprietary-Contents may change without notice...
  • Page 46 R-CHIP 22 ohm, 5 %, 1/16 W, DA, TP, 1005 2007-000173 R229 R-CHIP 22 ohm, 5 %, 1/16 W, DA, TP, 1005 2007-001298 R230 R-CHIP 51 ohm, 5 %, 1/16 W, DA, TP, 1005 SAMSUNG Proprietary-Contents may change without notice 7-10...
  • Page 47 R-CHIP 10 kohm, 5 %, 1/16 W, DA, TP, 1005 2007-003112 R325 R-CHIP 27 ohm, 5 %, 1/16 W, DA, TP, 1005 2007-003112 R326 R-CHIP 27 ohm, 5 %, 1/16 W, DA, TP, 1005 SAMSUNG Proprietary-Contents may change without notice 7-11...
  • Page 48 R-CHIP 6.2 kohm, 5 %, 1/16 W, DA, TP, 1005 2007-000172 R379 R-CHIP 10 ohm, 5 %, 1/16 W, DA, TP, 1005 2007-000172 R380 R-CHIP 10 ohm, 5 %, 1/16 W, DA, TP, 1005 SAMSUNG Proprietary-Contents may change without notice 7-12...
  • Page 49 IC-RESET 3470, SOT23, 5P, -, PLASTIC, 0.99/1.01 V, 300 mW, - 1201-001609 U301 IC-RF AMP 2363, SOP, 8P, 62MIL, DUAL, 18dB, PLASTIC, 5 V, -, -40to+85 3705-001226 U302 CONNECTOR-COAXIAL -, JACK, 75 Mohm, 50 ohm, 0.45dB SAMSUNG Proprietary-Contents may change without notice 7-13...
  • Page 50 CHARGER-SCHN100 TC TCH020EBE, SCH-N100, AC/DC, -, -, -, -, 110/220 GH71-00325A NPR-ANT DUMMY PLATE STH-N271, ZN, -, AU, - GH72-01753A PMO-KEY PAD STH-N271, -, EF TYPE, BLK, -, -, - GH73-00064A RMO-EAR JACK RUBBER SCH-900, RUBBER, 9X7X0.8, BLK, 70 GH73-00490A RMO-ANT.CAP STH-N271, RUBBER, -, D/GRY, 50, -...
  • Page 51 MEC-SUA.FLIP STH-N271, -, -, -, D/GRY, -, - GH68-01360A LABEL(M)-LOGO BADGE STH-N271, 3M9448, T0.16, 17.7, 3.8, -, D/GRY, -, GH68-31000P LABEL(R)-FLIP SHEET STH-N271, PC SHEET, T0.2, 3, 30, -, D/GRY, -, -, - GH72-01747A PMO-FLIP COVER STH-N271, -, PC, D/GRY, -, G4358, - GH75-00776A...
  • Page 52 LABEL(P)-SEAL SGH-A100, ART, 100G, 46, 34, -, WHT, -, -, - GH68-00662B LABEL(P)-BAR CODE SCH-3500, WHITE POLYESTER, 67X41, -, WHT GH68-01807A LABEL(R)-MAIN STH-N271, MAT, T0.05, 41.2, 27.2, -, SIL, -, -, - GH68-11057A LABEL(P)-MS BAR CODE SCH-1900, ART, 100X155, T0.1, WHT GH69-00800A...
  • Page 53 8. STH-N271 Exploded View and its Parts List 1. STH-N271 Cellular phone Exploded View 10-1 10-6 10-4 10-5 10-2 10-3 13-1 13-2 13-3 SAMSUNG Proprietary-Contents may change without notice...
  • Page 54 STH-N271 Exploded view and its Part List 2. STH-N271 Cellular phone Parts List SEC CODE Location Description Remark Gray Silver Gold FRONT COVER ASS’Y GH75-01169A GH75-01169B GH75-01169C FLIP COVER GH75-01170A GH75-01170B GH75-01170C KEY DUMMY GH72-01748A GH72-01748A GH72-01748A LED CAP GH72-01752A...

  • Page 55: Serial Cable

    STH-N271 Exploded view and its Part List 3. Test Jig (GH80-00614A) Serial Cable Power Supply Cable 5. RF Test Cable 4. TC (GH44-00145G) 220V (GH39-00092A) Israel 6. Cigarette Lighter Adaptor (GH44-00091A) 7. Test Cable (GH39-00090A) SAMSUNG Proprietary-Contents may change without notice...

  • Page 56: Block Diagram

    9. STH-N271 Block Diagrams 1. STH-N271 Base Band Part SAMSUNG Proprietary-Contents may change without notice...
  • Page 57 STH-N271 Block diagrams 2. STH-N271 Radio Part SAMSUNG Proprietary-Contents may change without notice...
  • Page 58 MEMO SAMSUNG Proprietary-Contents may change without notice...

  • Page 59: Pcb Diagrams

    10. STH-N271 PCB Diagrams 1. STH-N271 Main PCB Top Diagram SAMSUNG Proprietary-Contents may change without notice 10-1...
  • Page 60 STH-N271 PCB diagrams 2. STH-N271 Main PCB Bottom Diagram SAMSUNG Proprietary-Contents may change without notice 10-2...
  • Page 61 STH-N271 provides the AMPS and the Digital TDMA (cellular band only) of compliance with TIA/EIA-137. The radio operation of the STH-N271 has been implemented with the receiver, the transmitter, and the local oscillator controlled by the PLL. The circuit of the STH-N271 is described as followings.
  • Page 62 STH-N271 Circuit Description Figure2-1.BEC interface and block diagram SAMSUNG Proprietary-Contents may change without notice 11-2...

  • Page 63: Circuit Description

    This part mainly interface with IFC (U101) and RF part. As for interface of IFC, that will be explained detail in next section. As important signals are PREAMP_G for receiver path, PA-GATE, ALC_EN for transmitter path, PLL_DATA, PLL_CLK, PLL_STRB1 for PLL synthesizer, RX_BAT, TX_BAT for power management. SAMSUNG Proprietary-Contents may change without notice 11-3...
  • Page 64 Since the auxiliary output is not internally amplified, an external audio amplifier is applied before connection to the two headset and HFK. Figure 2-2.IFC interface and block diagram SAMSUNG Proprietary-Contents may change without notice 11-4...
  • Page 65 Since the auxiliary output is not internally amplified, an external audio amplifier (U102) is applied before connection to the headset and HFK. SAMSUNG Proprietary-Contents may change without notice 11-5...
  • Page 66 2. RF Section 2-1.Introduction From the starting point of developing the STH-N271, the cellular and the PCS band operations have been intended. Therefore, the STH-N271 contains many dual-band components and rooms for PCS band components, in order to widen the operating band for the next product. For playing essential role in the radio part, The STH-N271 includes many active components.
  • Page 67 The output power of U305 is transmitted to F313 (Cellular band coupler) in order to help the Tx power control by using the power detector diode. In result, the Tx power is transmitted to the air interface via an antenna. SAMSUNG Proprietary-Contents may change without notice 11-7...
  • Page 68 Auto Gain Control voltage PA_CNT IFC/RFIC Power Amplifier control voltage DEMOD RFIC/IFC Discriminator output TXDA_REF RFIC/IFC Tx section common mode DC bias PON_TX BEC/Regulator TX up converter power (V_RF2:RFIC) PON_VRF3 BEC/Regulator Local Amp power(V_RF3:RFIC) SAMSUNG Proprietary-Contents may change without notice 11-8...
  • Page 69 STH-N271 Circuit diagrams 3. STH-N271 IFIC Circuit Diagram VBAT AVCC RX_AUDIO R112 MIC+ ZD101 680K HEADSET_SENSE C101 R140 C102 100NF Q101 MIC_BIAS_EN 12PF C152 C176 C103 100NF C127 R115 C177 MIC- 4.7NF 560K,1% 100NF AVCC R128 C153 C154 C179 C106...
  • Page 70 2.2K DP_RX_DATA Q202 10NF LED_EN SCAN(4) R247 Q204 R238 D210 DP_TX_DATA 5.6K ZD208 SCAN(5) SCLK SIN_2 NOTE: WAITING FOR REPLAY FROM SAMSUNG ABOUT C_F PIN ALT_LED C221 47PF BATT BT201 AU201 HP_PWR ZD207 Q206 D211 RV205 SOUT_2 ZD206 TP220 CN202...
  • Page 71 STH-N271 Circuit diagrams 5. STH-N271 RF Circuit Diagram F301 R303 R301 R302 27ohm DUMMY PAD C302 C303 C466 R304 C301 100NF 100PF 2.4K 100NF L307: 6.8nH for PCS C471 C472 Transmission Z[OHM] L[mm] L502: 10nH for PCS L301 1.19 F302...

Table of Contents